Plug cock



Jan. 2, 1934- J. R. JoHANssoN PLUG COCK Filed Aug. 6, 1952 2Sheets-Sheet l Figi NVENTOR Jan. 2, -1934.

J. R. JoHANssoN 1,941,839

PLUG COCK Filed Aug. e, 1932 2 sheets-sheet 2 35mm Rkurdlwhcmson INV ENToR @MWI f-d Atorng] Patented Jan. 2, 1934 n vUNire STA-Tes YMTENTvOFFICE; f

JohanhRikard Johansson,v Stockholm, Sweden Application August 6 1932,SerialNo. 627,690,A

and in Sweden December 10, 1931 9 Claims.

converging wall of the Acock casing, Ypreferably.

by means of the plug itself` In addition to its motionl of rotation theplug can also preferably Vbe slidable or adjustable in the directionfrom the handle receiving portion, and the plug is also provided withVor connected to means adapted to take the seats along in the slidingmotion.

Two embodiments ofthe invention are shown in the accompanying drawings,in which Figures 1 and 2 show one embodiment, and

Figures 3-5 the other embodiment.

, Fig. 1 is a vertical section, and Figure 2 is aV 20' lateral view oithe plug with seats.

Figure 3 is the other embodiment in vertical section, while Figure 4 isan end view and a partial cross section of Figure 3.

Figure 5 shows'Figure 3 in View from above, certain parts being removed.

l indicates the spherical plug, 2 the spindle of the plug, 3 its handlereceiving portion, and 4 and 5 respectively inlet and outlet for theliquid. 6 and 6a indicates the seats.

According to the invention the cock casing for the seats converges inthe direction from the handle receiving portion 3, the seats 6 and 6abeing slidably disposed each along its converging wall 7, 'la of thecock casing'.

The adjustment of Vthe seats can, of course, take place in manydifferent ways. j

In the embodiment according to Figures 1 and 2 the adjustment takesplace by pulling the plug 1 in the direction toward the converging endof the cock casing by turning a nut 8 which is screwed to a projection 9extending downward from the plug. By this means the plug is movedalittle downward and brings along the seats 67, 6a, thus securing-abetter' seal. In order to bring along the seatsV more reliably the plugmay be connected to a strap-shaped supporter 10, the an nular leg ofwhich rests round each seat and positively carries said seat along inthe motion of the lug.

p The embodiment shown inFigures 3-5 diiers from the one now'describedin that when adjusting the seats still more the plug 1 is presseddownlward by means of a sleeve nut 11 arranged on the same, said nutresting with a-conical resting surface'12 on the plug and threaded into`aV member v13 belonging to the cock casing. A member 14 straddlingthe'shank of the plug 1 restswith strap-shaped extensions l5 on eachseat 6, 6a and carries along said seats in the motion of the plug Ytoward the converging end of the plug casing. 60 l In the twoembodiments a drawing-off cock 1'6, as shown in Figures 3 and 4, maybeprovided. Instead of the cock a removable plug may be used.v

By means of the devices described a uniform actuation of the two seatsis obtained, and the plug as well as the seats may readily be removed inthe same direction.

Having now described my invention, what I claim as new and desire tosecure by Letters Patent is: Y T10 1. In a valve structure of the classdescribed, a casing having converging inside walls, inlet and outletopenings leading therefrom, a spherical plug within said casing, anopening in said plug adapted for'alignment with said openings, and 75adjustable seat members disposed adjacent said Y openings and arrangedto cooperate with said casing` and plug to form a tight seal, the seatsbeing adjusted by movement of said plug.

2. In avalve structure of the class described, 86

Afa-casing having converging inside walls, inlet and outlet openingsleading fromsaid casing, a spher-v ical plug within said casing, Tanopening in said plug adapted foralignment with Vsaid openings, g opposediioating seat members disposed adjacent 'Y said openingsV and arrangedto cooperate with said casing and plug to forma tight'seal, and meanscarried by said plug and cooperating therewith for simultanously movingeach of said seat Ymembers with respect to said casing.

3. In a valve structure of the class described, a casinghavingconverging inside walls, inlet and outlet openings leading fromsaid casing, a spheri- Vcal plug Within said bore casing, an opening insaid plugadapted for alignment with said openings, opposed floating seatmembers disposed ad- Y jacent said openings and arranged to cooperate ywith said casing and plug to form Ya tight seal, and a yoke secured tosaid plug having arms adapted to bear against each of said seat mem- Ibobers to retain them Yin seating position. Y 4. A valve :structure of theclass described Y comprising a casing having converging inside walls, aspherical plugwithin said casing and opposed annular floating seatmembers arranged 'to cooperate with said casing and plug toform atightvseal, the seats being adjustedV by movement of said plug. Y

v5.`A valve structure of Athe class Adescribed l comprising a casinghaving convergingvinside 'Y said plug adapted for alignment with .saidopenings, opposed annular seat members arranged Aadjacent said openingsand cooperating with said casing and plug to form a tight seal, saidplug and each of said seat members being adjustable for Wear withrespect to said casing by movement of said plug.

7. In a valve structure of the class described, a

casing having converging inside Walls, inlet and outlet openings leadingfrom saidV casing, a spherical plug Within said casing, an opening insaid plug `adapted for alignment with said openings, 'annularfloatingseat members disposed adjacent said openings and cooperating'tvithsaidcasing andplug to form a tight seal, said seat members having aspherical face adapted to .bear

against said plug 'and Va plane face to cooperate with said casing, ayoke lcarried by said plug, said yoke having arms adapted to bearagainst said seat members to retain them in seating position, and meansfor adjusting said plug and each Vof seat members With respect to saidcasing to take up Wear. Y

8. In a valve structure of the class described, a casing havingconverging inside Walls, inlet and outlet openings leading from saidcasing, a spherical plug within said casing, an opening in said plugadapted for alignment `With said openings, oppositely disposed floatingseat members disposed adjacent said openings and arranged to cooperatewith said casing and plug to form a tight seal, said seat members beingjointly adjustable with respect to said casing by movement of said plug.

9. ln a valve of the character described, a casing having two oppositelydisposed converging inside walls and inlet and outlet openings, aspherical plug in said casing, having an opening to correspond with saidopenings, a spindle secured to said plug vand kpmieoting outside thecasing for turning Ythe plug, seat members disposed a'djacent said wallsand cooperating with said plug to form a tight seal, a Iyoke memberengaging said seat members, andqmeans disposed opposite said spindle andengaging the yoke for moving saidyoke and seat members therewith.

JOHAN RIKARD J OHANSSON

